/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.mpp.plan.statement.crud;

import org.apache.iotdb.commons.path.PartialPath;
import org.apache.iotdb.db.exception.sql.SemanticException;
import org.apache.iotdb.db.mpp.plan.statement.Statement;
import org.apache.iotdb.db.mpp.plan.statement.StatementType;
import org.apache.iotdb.db.mpp.plan.statement.StatementVisitor;

import java.util.*;

/**
 * this class extends {@code Statement} and process insert statement.
 */
public class InsertStatement extends Statement {

    private PartialPath device;

    private long[] times;
    private String[] measurementList;

    private List<String[]> valuesList;

    private boolean isAligned;

    public InsertStatement() {
        statementType = StatementType.INSERT;
    }

    @Override
    public List<PartialPath> getPaths() {
        List<PartialPath> ret = new ArrayList<>();
        for (String m : measurementList) {
            PartialPath fullPath = device.concatNode(m);
            ret.add(fullPath);
        }
        return ret;
    }

    public PartialPath getDevice() {
        return device;
    }

    public void setDevice(PartialPath device) {
        this.device = device;
    }

    public String[] getMeasurementList() {
        return measurementList;
    }

    public void setMeasurementList(String[] measurementList) {
        this.measurementList = measurementList;
    }

    public List<String[]> getValuesList() {
        return valuesList;
    }

    public void setValuesList(List<String[]> valuesList) {
        this.valuesList = valuesList;
    }

    public long[] getTimes() {
        return times;
    }

    public void setTimes(long[] times) {
        this.times = times;
    }

    public boolean isAligned() {
        return isAligned;
    }

    public void setAligned(boolean aligned) {
        isAligned = aligned;
    }

    @Override
    public <R, C> R accept(StatementVisitor<R, C> visitor, C context) {
        return visitor.visitInsert(this, context);
    }

    public void semanticCheck() {
        Set<String> deduplicatedMeasurements = new HashSet<>();
        for (String measurement : measurementList) {
            if (measurement == null || measurement.isEmpty()) {
                throw new SemanticException(
                        "Measurement contains null or empty string: " + Arrays.toString(measurementList));
            }
            if (deduplicatedMeasurements.contains(measurement)) {
                throw new SemanticException("Insertion contains duplicated measurement: " + measurement);
            } else {
                deduplicatedMeasurements.add(measurement);
            }
        }

        int measurementsNum = measurementList.length;
        for (int i = 0; i < times.length; i++) {
            if (measurementsNum != valuesList.get(i).length) {
                throw new SemanticException(
                        String.format(
                                "the measurementList's size %d is not consistent with the valueList's size %d",
                                measurementsNum, valuesList.get(i).length));
            }
        }
    }
}
